https://en.wikipedia.org/wiki/Kingdom_of_the_Suebi might have a good timeline example of syagerius attempt to unify a "great province" in roman name but perhaps in a style he was used to seeing among his frankish enemies. and, likewise to richimer, it collapses after and the legacy is forever that the pentapolis wants to unify but no one can make it happen. resulting in uneasy truces and easy wars throughout the era. alliances shifting like the tides splash the shores.